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Android Application on MVVM Architecture to Change Database INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) E-ISSN: 2395-0056 VOLUME: 07 ISSUE: 06 | JUNE 2020 WWW.IRJET.NET P-ISSN: 2395-0072 Android Application on MVVM Architecture to Change Database Nagaraj M1, Chethana G2 1,2Department of Electronics and Communication, RV College of Engineering, Bangalore. ------------------------------------------------------------------------***------------------------------------------------------------------------- Abstract- The main objective of this app is to provide 2. PROBLEM STATEMENT premium account and app upgradation facility and to get the details of the users of that app enable and monthly develop the android Class App using MVVM Architecture reports using MVVM architecture. Personalised and KOIN dependency to avoid lagging and replace the performance reports for all the users of the batch and Chat Dagger 2 with the same so that We can develop a user- facility, anytime, anywhere. Disable chat when you’re busy, friendly App easily create their Control what info your service provider Tools App helps the non-technical employees to get and admin can view for your batches online courses and information about students, organization, and sell on their mobile app. some other facilities like data is tutorsOBJECTIVES secured using AES 256bit encryption of courses providing maximum security, manage your application completely The objective of this project is to create a user- digitally. simplify the above work managing app is made friendly app that provides useful information about users which upgrades the app to new version and activation of such as student, tutor and organizations. premium account is done through this app. A literature survey was done on works on apps created Key Words: MVVM, KOIN, API using mvvm architecture. Some of them are listed below. 1. INTRODUCTION In [1], The study results aim to bring more clarity in the Android is a powerful operating system and it variety of MVVM design patterns and help practitioners to supports a large number of applications in Smartphones. make better grounded decisions when selecting patterns. These applications are more comfortable and advanced for users. The hardware that supports android software is In [2], This research provided some recommended based on the ARM architecture platform. The android is an solutions to satisfy the relations between MVVM objects in open-source operating system that means that it’s free and the project. Activity designed in [1], with MVVM design anyone can use it. The android has got millions of apps pattern for Android development is introduced and MVVM available that can help you manage your life one or another Framework, principle and advantage are also studied in way and it is available to low cost in the market for that detail. reason android is very popular. In [3], Shifting from dagger2 to KOIN dependency API or Application Programming Interface is essentially injection, pragmatic lightweight dependency injection how our app communicates with the Android operating framework for Kotlin developers. Written in pure Kotlin system. API is what allows us to build our apps so they can using functional resolution only: no proxy, no code run on android devices. Now as with everything over time generation, no reflection. new features are developed and old features refined and sometimes products are completely revamped. In [4], Android AlertDialog can be used to display the dialog message with OK and Cancel buttons. It can be used Maintaining the larger database is difficult so api’s are used to interrupt and ask the user about his/her choice to to change the database and update the new things and continue or discontinue. allow other changes to the database that can done easily using MVVM architecture and some dependency injection In [5], Google otp 2-Step Verification provides stronger so that UI can be changed frequently without changing the security for our Google Account by requiring a second base code verification step when you sign in. In addition to our password, we’ll also need a code generated by the Google Authentication app on our phone. Platform and they can provide ratings based on the quality. 3. MVVM ARCHITECTURE SETUP MVVM was designed to make use of data binding functions in WPF (Windows Presentation Foundation) to better facilitate the separation of view layer development from the rest of the pattern, by removing virtually all GUI code (”code-behind”) from the view layer. Instead of requiring user experience (UX) developers to write GUI code, they can use the framework markup language (e.g., © 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 1465 INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) E-ISSN: 2395-0056 VOLUME: 07 ISSUE: 06 | JUNE 2020 WWW.IRJET.NET P-ISSN: 2395-0072 XML) and create data bindings to the view model, which is Data : Declarative data and command-binding are implicit written and maintained by application developers. The in the MVVM pattern. In the Microsoft solution stack, the separation of roles allows interactive designers to focus on binder is a markup language called XML. The binder frees UX needs rather than programming of business logic. The the developer from being obliged to write boiler-plate logic layers of an application can thus be developed in multiple to synchronize the view model and view. When work streams for higher productivity. Even when a single implemented outside of the Microsoft stack, the presence developer works on the entire code base, a proper of a declarative data binding technology is what makes this separation of the view from the model is more productive, pattern possible, and without a binder, one would typically as user interface typically changes frequently and late in use MVP or MVC instead and have to write more the development cycle based on end-user feedback. The boilerplate (or generate it with some other tool). MVVM pattern attempts to gain both advantages of separation of functional development provided by MVC, 4. API SETUP AND DATA FETCHING while leveraging the advantages of data bindings and the Web APIs are the defined interfaces through framework by binding data as close to the pure application which interactions happen between an enterprise and model as possible. It uses the binder, view model, and any applications that use its assets, which also is a Service business layers’ data-checking features to validate Level Agreement (SLA) to specify the functional provider incoming data. The result is that the model and framework and expose the service path or URL for its API users. An drive as much of the operations as possible, eliminating or API approach is an architectural approach that revolves minimizing application logic which directly manipulates around providing a program interface to a set of services the view. to different applications serving different types of consumers. When used in the context of web development, an API is typically defined as a set of specifications, such as Hypertext Transfer Protocol (HTTP) request messages, along with a definition of the structure of response messages, usually in an Extensible Markup Language (XML) or JavaScript Object Notation (JSON) format. An example might be a shipping company. Fig. 3.1 Crop Database 1 Model : Model refers either to a domain model, which represents real state content (an object oriented approach), or to the data access layer, which represents content (a data-centric approach).View, As in the model- view-controller (MVC) and model-view-presenter (MVP) patterns, the view is the structure, layout, and appearance of what a user sees on the screen. It displays a representation of the model and receives the user’s interaction with the view (clicks, keyboard, gestures, etc.), Fig.4.1: Api architecture to fetch the data and it forwards the handling of these to the view model via the data binding (properties, event callbacks, etc.) that is API that can be added to an eCommerce-focused website to defined to link facilitate ordering shipping services and automatically include current shipping rates, without the site developer View Model : The view model is an abstraction of the view having to enter the shipper’s rate table into a web exposing public properties and commands. Instead of the database. While ”web API” historically has been virtually controller of the MVC pattern, or the presenter of the MVP synonymous with web service, the recent trend (so-called pattern, MVVM has a binder, which automates Web 2.0) has been moving away from Simple Object Access communication between the view and its bound properties Protocol (SOAP) based web services and service-oriented in the view model. The view model has been described as a architecture (SOA) towards more direct representational state of the data in the model. The main difference between state transfer (REST) style web resources and resource- the view model and the Presenter in the MVP pattern, is oriented architecture (ROA). Part of this trend is related to that the presenter has a reference to a view whereas the the Semantic Web movement toward Resource Description view model does not. Instead, a view directly binds to Framework (RDF), a concept to promote web-based properties on the view model to send and receive updates. ontology engineering technologies. Web API’s allow the To function efficiently, this requires a binding technology combination of multiple API’s into new applications known as or generating boilerplate code to do the binding the view mashups. In the social media space, web API’s have allowed web and view model. communities to facilitate sharing content and data between communities and applications. In this way, content that is created © 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 1466 INTERNATIONAL RESEARCH JOURNAL OF ENGINEERING AND TECHNOLOGY (IRJET) E-ISSN: 2395-0056 VOLUME: 07 ISSUE: 06 | JUNE 2020 WWW.IRJET.NET P-ISSN: 2395-0072 in one place dynamically can be posted and updated to multiple have consistent behaviour across the widest range of locations on the web.
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